feel like a failure!

My beautiful daughter is almost a month old & I wanted/want to breast feed her till she was a year but no matter what I try I just don't have the milk supply she needs & I can't help but think I'm a failure as a mom! 
I'm doing this anonymous because I'm super emotional & scared that others will feel as if I am a failure as a mom as well! 
ps. I've tried everything all I do all day is breastfeed & pump I've tried the mother's milk tea, tried natural ways to boost my milk & even was given a prescription that's suppose to help😔😔😔😔😔